The impact of neighbourhood ethnic concentration on ethnic minorities’ outcomes is a contested topic, with mixed empirical results. In this paper, we use a large scale longitudinal dataset of England and Wales, covering a 40 year period, to assess the impact of neighbourhood co ethnic concentration in childhood on subsequent adult labour market outcomes. We […]

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The earth itself came along pretty nippily just five days later, on September 14. And nine days after that, on September 25, our very first “living” ancestors, amoebae, made their formal bow. Things dawdled for a while after that: the first rocks formed on earth around October 2, and the oldest fossils (bacteria and blue […]

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Making 10,000 pound TomoTherapy machines that control X rays with high precision is a heavy responsibility, Zahn says. “We make high complexity, high dollar equipment. In more recent years, especially in sites where TomoTherapy is the only device, it’s really been proving itself as an all purpose, workhorse radiation therapy machine. This is the first […]

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The structural sensitivity of the precessing vortex core is located upstream of the central recirculation zone, identifying it as a spiral vortex breakdown instability in the nozzle. Furthermore, the structural sensitivity indicates that the dominant instability mechanism is the Kelvin “Helmholtz instability at the inflection point forming near vortex breakdown. Adjoint modes are strong in […]

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